%0 Journal Article %T Spaces of constant curvatere, the Liouville equation and contractions of Lie algebras %A Kostyakov, I.V. %A Kuratov, V.V. %K Liouville equation, contractions of Lie groups %J Proceedings of the Komi Science Centre of the Ural Division of the Russian Academy of Sciences %D 2023 %N 0 %P 7 %I FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"